Declension table of ?devarahasya

Neuter	Singular	Dual	Plural
Nominative	devarahasyam	devarahasye	devarahasyāni
Vocative	devarahasya	devarahasye	devarahasyāni
Accusative	devarahasyam	devarahasye	devarahasyāni
Instrumental	devarahasyena	devarahasyābhyām	devarahasyaiḥ
Dative	devarahasyāya	devarahasyābhyām	devarahasyebhyaḥ
Ablative	devarahasyāt	devarahasyābhyām	devarahasyebhyaḥ
Genitive	devarahasyasya	devarahasyayoḥ	devarahasyānām
Locative	devarahasye	devarahasyayoḥ	devarahasyeṣu

Compound devarahasya -

Adverb -devarahasyam -devarahasyāt